Either brilliant idea, or exceedingly ignorant.

peteleoni · 20th November 2012, 05:19 AM

Hi all. Please indulge me here. Is it possible to front horn load an already ported enclosure? In theory the port comes out in phase with the front in any properly designed box and greatly increases efficiency at fs. Why can not the whole kaboodle (driver front wave plus rear wave from port then be combined and fed into a folded horn? Would this not render an extremely efficient design?

peteleoni · 20th November 2012, 06:06 AM

I'm getting the exceedingly ignorant feeling. )-:

peteleoni · 20th November 2012, 06:49 AM

Not talking about bandpass, but a Klipsch style folded exponential horn coupled to the driver plus the port?

peteleoni · 20th November 2012, 06:57 AM

Here is sort of what I am speaking of but mentally put the port back into the same motor board as the driver. http://www.rockprojekt.de/Technik/Im...ded%20Horn.gif

peteleoni · 20th November 2012, 08:21 AM

I'm apparently extremely ignorable. I can however continue this conversion with my self until I solve it. Now I am wondering is not having the driver in a sealed enclosure prohibits its action as a pseudo compression driver, thus limiting its potential SPL in trade for extended LF?

peteleoni · 20th November 2012, 08:22 AM

You guys are really nice to talk to BTW.

pinkmouse · 20th November 2012, 08:25 AM

Have patience. It's only three hours since you asked the question.

wintermute · 20th November 2012, 08:26 AM

LOL sorry I can't add anything to the discussion as I have zero knowledge about horn loading, but I thought I'd chime in and say hi

Give it a few more hours it is probably a bit early yet for a lot of the membership!

Tony.

peteleoni · 20th November 2012, 08:43 AM

Thanks , hangin in. I have seen variations on this so I know its not completely without merit. I always wondered why PWK did not vent the drivers right into the horn instead of sealing them. The K-33 for example works about as well used either way. There must be a phase or comb filtering dynamic that I am missing here, though it seems to me to be a no brainer best of both worlds possibility.

tinitus · 20th November 2012, 08:47 AM

Quote:

Originally Posted by peteleoni

In theory the port comes out in phase with the front in any properly designed box........

Quote:

Originally Posted by peteleoni

You guys are really nice to talk to BTW.

20th November 2012, 05:19 AM	#1
peteleoni diyAudio Member Join Date: Apr 2011	Either brilliant idea, or exceedingly ignorant. Hi all. Please indulge me here. Is it possible to front horn load an already ported enclosure? In theory the port comes out in phase with the front in any properly designed box and greatly increases efficiency at fs. Why can not the whole kaboodle (driver front wave plus rear wave from port then be combined and fed into a folded horn? Would this not render an extremely efficient design?

20th November 2012, 08:25 AM	#7
pinkmouse diyAudio Moderator Join Date: Apr 2002 Location: Chatham, England	Have patience. It's only three hours since you asked the question. __________________ Al I conceive of nothing, in religion, science or philosophy, that is more than the proper thing to wear, for a while. Charles Fort

20th November 2012, 08:26 AM	#8
wintermute just another diyAudio Moderator Join Date: Aug 2003 Location: Sydney Blog Entries: 22	LOL sorry I can't add anything to the discussion as I have zero knowledge about horn loading, but I thought I'd chime in and say hi Give it a few more hours it is probably a bit early yet for a lot of the membership! Tony. __________________ Any intelligence I may appear to have is purely artificial! Some of my photos

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20th November 2012, 06:06 AM	#2
peteleoni diyAudio Member Join Date: Apr 2011	I'm getting the exceedingly ignorant feeling. )-:

20th November 2012, 06:49 AM	#3
peteleoni diyAudio Member Join Date: Apr 2011	Not talking about bandpass, but a Klipsch style folded exponential horn coupled to the driver plus the port?

20th November 2012, 06:57 AM	#4
peteleoni diyAudio Member Join Date: Apr 2011	Here is sort of what I am speaking of but mentally put the port back into the same motor board as the driver. http://www.rockprojekt.de/Technik/Im...ded%20Horn.gif

20th November 2012, 08:21 AM	#5
peteleoni diyAudio Member Join Date: Apr 2011	I'm apparently extremely ignorable. I can however continue this conversion with my self until I solve it. Now I am wondering is not having the driver in a sealed enclosure prohibits its action as a pseudo compression driver, thus limiting its potential SPL in trade for extended LF?

20th November 2012, 08:22 AM	#6
peteleoni diyAudio Member Join Date: Apr 2011	You guys are really nice to talk to BTW.

20th November 2012, 08:43 AM	#9
peteleoni diyAudio Member Join Date: Apr 2011	Thanks , hangin in. I have seen variations on this so I know its not completely without merit. I always wondered why PWK did not vent the drivers right into the horn instead of sealing them. The K-33 for example works about as well used either way. There must be a phase or comb filtering dynamic that I am missing here, though it seems to me to be a no brainer best of both worlds possibility.

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